The Morphology and Phases of Ni-Se Powders Prepared by Hydrothermal Method

Abstract

Ni-Se powders synthesized by hydrothermal co-reduction method from NiCl2.6H2O and SeO2 at 95～220 °C. The phases and morphology of the products were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM) respectively. Experimental results show that, Ni0.85Se can be synthesized at 95～220 °C while noticeable impurities appeared at lower reaction temperatures. The products with single-phase Ni0.85Se obtained at 200 and 220 °C show hollow sphere structures with diameters of about 150 ~ 700 nm, which have complete and regular shape but no holes.

The Effects of Different Technologies on Synthesis of CuInSe2 Prepared by Coreduction

“…The effects of different conditions on the phase, crystallinity, size and morphology of CuInSe 2 powders were investigated. Cu 2 ZnSnSe 4 and ZnSe were successfully synthesized by our group, which provided a good reference for this work (11,12).…”